New ATI Driver

"Release Notes?" Try the "Last Minute Notes..."
http://driver.ati.com/drivers/766-04-020129x-2545e-additional.html

Highlights:

Adds Anisotropic Filtering support with the following features (For the RADEON 8500):
- New control Panel
- For both OpenGL and Direct3D
- 2X 4X 8X, and 16X Anisotropic filtering modes
- Improves image quality while maintaining high level of performance
OpenGL (Quake3) performance improvements for the RADEON 7500
Dynamic Monitor Re-Assignment - Switching the assignment of the primary and secondary displays in single step.

Bug Fixes:

Fix to improve performance bug found on Windows XP systems with more than 512 MB of system memory
1024x768 TV OUT support for the RADEON 8500 has been fixed

Known Issues:

Anisotropic Filtering – If the user is running an application in a window, and turns on Anisotropic Filtering, the user must change the display mode (resolution) after the Anisotropic Filtering setting has been enabled, in order for the setting to take effect. NOTE: This does not apply to full screen applications.
Serious Sam 2 - Locks up on the RADEON 7000/7200/7500 based graphics accelerator (NOT the RADEON 8500) after a prolonged period of play.
Anisotropic Filtering – The control panel for the RADEON 7500 has an Anisotropic Filtering control panel, but it is not enabled at this point in time.